package 插入删除和获取随机元素.src.main;

public class RandomizedSet {

    public RandomizedSet() {




    }

    public boolean insert(int val) {


        return false;
    }

    public boolean remove(int val) {

        return false;
    }

    public void getRandom() {

    }
}

/**
 * Your RandomizedSet object will be instantiated and called as such:
 * RandomizedSet obj = new RandomizedSet();
 * boolean param_1 = obj.insert(val);
 * boolean param_2 = obj.remove(val);
 * int param_3 = obj.getRandom();
 */